Victoria Eugenie would have been quite far down in the order of succession. After all, her mother Princess Beatrice was the youngest child of Queen Victoria. Also three brothers would have been before Victoria Eugenie in the order of succession.
That’s very true, she had a number of people ahead of her. But I think anyone who converts to Catholicism loses their spot in the succession, regardless of how far down they are.
I’m sure she didn’t mind, since she converted to become Queen of Spain.